Solid golf ball

Abstract

The present invention provides a solid golf ball having excellent rebound characteristics while maintaining good shot feel. The present invention relates to a solid golf ball comprising at least one layer of a core and at least one layer of a cover formed on the core, wherein at least one layer of the core is obtained by vulcanizing and molding a rubber composition, the rubber composition comprises (a) based on 100 parts by weight of a base rubber, (b) from 15 to 50 parts by weight of a metal salt of α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as a co-crosslinking agent, and the metal salt of α,β-unsaturated carboxylic acid has an average particle size of 6 to 30 μm, and (c) 0.1 to 1.0 parts by weight of a vulcanization initiator.

What is claimed is:  
     
         1 . A solid golf ball comprising at least one layer of a core and at least one layer of a cover formed on the core, wherein at least one layer of the core is obtained by vulcanizing and molding a rubber composition, the rubber composition comprises 
 (a) based on 100 parts by weight of a base rubber,    (b) from 15 to 50 parts by weight of a metal salt of α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as a co-crosslinking agent, and the metal salt of α,β-unsaturated carboxylic acid has an average particle size of 6 to 30 μm, and    (c) 0.1 to 1.0 parts by weight of a vulcanization initiator.    
     
     
         2 . The solid golf ball according to  claim 1 , wherein the co-crosslinking agent is zinc acrylate.  
     
     
         3 . The solid golf ball according to  claim 1 , wherein the co-crosslinking agent has an average particle size of 8 to 25 μm.  
     
     
         4 . A one piece-solid golf ball obtained by vulcanizing and molding a rubber composition, wherein the rubber composition comprises 
 (a) based on 100 parts by weight of a base rubber,    (b) from 15 to 50 parts by weight of a metal salt of α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as a co-crosslinking agent, and the metal salt of α,β-unsaturated carboxylic acid has an average particle size of 6 to 30 μm, and (c) 0.1 to 1.0 parts by weight of a vulcanization initiator.